(function () {

    var defs = {}; // id -> {dependencies, definition, instance (possibly undefined)}

// Used when there is no 'main' module.
// The name is probably (hopefully) unique so minification removes for releases.
    var register_3795 = function (id) {
        var module = dem(id);
        var fragments = id.split('.');
        var target = Function('return this;')();
        for (var i = 0; i < fragments.length - 1; ++i) {
            if (target[fragments[i]] === undefined)
                target[fragments[i]] = {};
            target = target[fragments[i]];
        }
        target[fragments[fragments.length - 1]] = module;
    };

    var instantiate = function (id) {
        var actual = defs[id];
        var dependencies = actual.deps;
        var definition = actual.defn;
        var len = dependencies.length;
        var instances = new Array(len);
        for (var i = 0; i < len; ++i)
            instances[i] = dem(dependencies[i]);
        var defResult = definition.apply(null, instances);
        if (defResult === undefined)
            throw 'module [' + id + '] returned undefined';
        actual.instance = defResult;
    };

    var def = function (id, dependencies, definition) {
        if (typeof id !== 'string')
            throw 'module id must be a string';
        else if (dependencies === undefined)
            throw 'no dependencies for ' + id;
        else if (definition === undefined)
            throw 'no definition function for ' + id;
        defs[id] = {
            deps: dependencies,
            defn: definition,
            instance: undefined
        };
    };

    var dem = function (id) {
        var actual = defs[id];
        if (actual === undefined)
            throw 'module [' + id + '] was undefined';
        else if (actual.instance === undefined)
            instantiate(id);
        return actual.instance;
    };

    var req = function (ids, callback) {
        var len = ids.length;
        var instances = new Array(len);
        for (var i = 0; i < len; ++i)
            instances.push(dem(ids[i]));
        callback.apply(null, callback);
    };

    var ephox = {};

    ephox.bolt = {
        module: {
            api: {
                define: def,
                require: req,
                demand: dem
            }
        }
    };

    var define = def;
    var require = req;
    var demand = dem;
// this helps with minificiation when using a lot of global references
    var defineGlobal = function (id, ref) {
        define(id, [], function () {
            return ref;
        });
    };
    /*jsc
    ["tinymce.plugins.tabfocus.Plugin","tinymce.core.PluginManager","tinymce.core.dom.DOMUtils","tinymce.core.util.Tools","tinymce.core.EditorManager","tinymce.core.util.Delay","tinymce.core.Env","global!tinymce.util.Tools.resolve"]
    jsc*/
    defineGlobal("global!tinymce.util.Tools.resolve", tinymce.util.Tools.resolve);
    /**
     * ResolveGlobal.js
     *
     * Released under LGPL License.
     * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
     *
     * License: http://www.tinymce.com/license
     * Contributing: http://www.tinymce.com/contributing
     */

    define(
        'tinymce.core.PluginManager',
        [
            'global!tinymce.util.Tools.resolve'
        ],
        function (resolve) {
            return resolve('tinymce.PluginManager');
        }
    );

    /**
     * ResolveGlobal.js
     *
     * Released under LGPL License.
     * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
     *
     * License: http://www.tinymce.com/license
     * Contributing: http://www.tinymce.com/contributing
     */

    define(
        'tinymce.core.dom.DOMUtils',
        [
            'global!tinymce.util.Tools.resolve'
        ],
        function (resolve) {
            return resolve('tinymce.dom.DOMUtils');
        }
    );

    /**
     * ResolveGlobal.js
     *
     * Released under LGPL License.
     * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
     *
     * License: http://www.tinymce.com/license
     * Contributing: http://www.tinymce.com/contributing
     */

    define(
        'tinymce.core.util.Tools',
        [
            'global!tinymce.util.Tools.resolve'
        ],
        function (resolve) {
            return resolve('tinymce.util.Tools');
        }
    );

    /**
     * ResolveGlobal.js
     *
     * Released under LGPL License.
     * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
     *
     * License: http://www.tinymce.com/license
     * Contributing: http://www.tinymce.com/contributing
     */

    define(
        'tinymce.core.EditorManager',
        [
            'global!tinymce.util.Tools.resolve'
        ],
        function (resolve) {
            return resolve('tinymce.EditorManager');
        }
    );

    /**
     * ResolveGlobal.js
     *
     * Released under LGPL License.
     * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
     *
     * License: http://www.tinymce.com/license
     * Contributing: http://www.tinymce.com/contributing
     */

    define(
        'tinymce.core.util.Delay',
        [
            'global!tinymce.util.Tools.resolve'
        ],
        function (resolve) {
            return resolve('tinymce.util.Delay');
        }
    );

    /**
     * ResolveGlobal.js
     *
     * Released under LGPL License.
     * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
     *
     * License: http://www.tinymce.com/license
     * Contributing: http://www.tinymce.com/contributing
     */

    define(
        'tinymce.core.Env',
        [
            'global!tinymce.util.Tools.resolve'
        ],
        function (resolve) {
            return resolve('tinymce.Env');
        }
    );

    /**
     * Plugin.js
     *
     * Released under LGPL License.
     * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
     *
     * License: http://www.tinymce.com/license
     * Contributing: http://www.tinymce.com/contributing
     */

    /**
     * This class contains all core logic for the code plugin.
     *
     * @class tinymce.tabfocus.Plugin
     * @private
     */
    define(
        'tinymce.plugins.tabfocus.Plugin',
        [
            'tinymce.core.PluginManager',
            'tinymce.core.dom.DOMUtils',
            'tinymce.core.util.Tools',
            'tinymce.core.EditorManager',
            'tinymce.core.util.Delay',
            'tinymce.core.Env'
        ],
        function (PluginManager, DOMUtils, Tools, EditorManager, Delay, Env) {
            PluginManager.add('tabfocus', function (editor) {
                var DOM = DOMUtils.DOM;

                function tabCancel(e) {
                    if (e.keyCode === 9 && !e.ctrlKey && !e.altKey && !e.metaKey) {
                        e.preventDefault();
                    }
                }

                function tabHandler(e) {
                    var x, el, v, i;

                    if (e.keyCode !== 9 || e.ctrlKey || e.altKey || e.metaKey || e.isDefaultPrevented()) {
                        return;
                    }

                    function find(direction) {
                        el = DOM.select(':input:enabled,*[tabindex]:not(iframe)');

                        function canSelectRecursive(e) {
                            return e.nodeName === "BODY" || (e.type != 'hidden' &&
                                e.style.display != "none" &&
                                e.style.visibility != "hidden" && canSelectRecursive(e.parentNode));
                        }

                        function canSelect(el) {
                            return /INPUT|TEXTAREA|BUTTON/.test(el.tagName) && EditorManager.get(e.id) && el.tabIndex != -1 && canSelectRecursive(el);
                        }

                        Tools.each(el, function (e, i) {
                            if (e.id == editor.id) {
                                x = i;
                                return false;
                            }
                        });
                        if (direction > 0) {
                            for (i = x + 1; i < el.length; i++) {
                                if (canSelect(el[i])) {
                                    return el[i];
                                }
                            }
                        } else {
                            for (i = x - 1; i >= 0; i--) {
                                if (canSelect(el[i])) {
                                    return el[i];
                                }
                            }
                        }

                        return null;
                    }

                    v = Tools.explode(editor.getParam('tab_focus', editor.getParam('tabfocus_elements', ':prev,:next')));

                    if (v.length == 1) {
                        v[1] = v[0];
                        v[0] = ':prev';
                    }

                    // Find element to focus
                    if (e.shiftKey) {
                        if (v[0] == ':prev') {
                            el = find(-1);
                        } else {
                            el = DOM.get(v[0]);
                        }
                    } else {
                        if (v[1] == ':next') {
                            el = find(1);
                        } else {
                            el = DOM.get(v[1]);
                        }
                    }

                    if (el) {
                        var focusEditor = EditorManager.get(el.id || el.name);

                        if (el.id && focusEditor) {
                            focusEditor.focus();
                        } else {
                            Delay.setTimeout(function () {
                                if (!Env.webkit) {
                                    window.focus();
                                }

                                el.focus();
                            }, 10);
                        }

                        e.preventDefault();
                    }
                }

                editor.on('init', function () {
                    if (editor.inline) {
                        // Remove default tabIndex in inline mode
                        DOM.setAttrib(editor.getBody(), 'tabIndex', null);
                    }

                    editor.on('keyup', tabCancel);

                    if (Env.gecko) {
                        editor.on('keypress keydown', tabHandler);
                    } else {
                        editor.on('keydown', tabHandler);
                    }
                });
            });


            return function () {
            };
        }
    );
    dem('tinymce.plugins.tabfocus.Plugin')();
})();
